<template>
    <div class="sidebar">
        <el-menu
            class="sidebar-el-menu"
            :default-active="onRoutes"
            collapse="true"
            background-color="#324157"
            text-color="#bfcbd9"
            active-text-color="#20a0ff"
            unique-opened
            @select="handleSelect"
        >
            <template v-for="item in items">
                <template v-if="item.subs">
                    <el-submenu :index="item.index" :key="item.index">
                        <template #title>
                            <i :class="item.icon"></i>
                            <span>{{ item.title }}</span>
                        </template>
                        <template v-for="subItem in item.subs">
                            <el-submenu
                                v-if="subItem.subs"
                                :index="subItem.index"
                                :key="subItem.index"
                            >
                                <template #title>{{ subItem.title }}</template>
                                <el-menu-item
                                    v-for="(threeItem, i) in subItem.subs"
                                    :key="i"
                                    :index="threeItem.index"
                                >{{ threeItem.title }}</el-menu-item>
                            </el-submenu>
                            <el-menu-item
                                v-else
                                :index="subItem.index"
                                :key="subItem.index"
                            >{{ subItem.title }}</el-menu-item>
                        </template>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.index" :key="item.index" style="padding: 20px 20px;">
                        <i :class="item.icon"></i>
                        <template #title>{{ item.title }}</template>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script setup>
import { computed, watch } from "vue";
import { useRoute, useRouter } from "vue-router";
import { layer } from "@layui/layer-vue";

const items = [
    {
        icon: "el-icon-lx-home",
        index: "/dashboard",
        title: "首页",
    },
    {
        icon: "el-icon-suitcase",
        index: "/map",
        title: "主控台"
    },
    {},
    {
        icon: "el-icon-lx-cascades",
        index: "/table",
        title: "基础表格",
    },
    {
        icon: "el-icon-lx-copy",
        index: "/tabs",
        title: "tab选项卡",
    },
    {
        icon: "el-icon-lx-calendar",
        index: "3",
        title: "表单相关",
        subs: [
            {
                index: "/form",
                title: "基本表单",
            },
            {
                index: "/upload",
                title: "文件上传",
            },
            {
                index: "4",
                title: "三级菜单",
                subs: [
                    {
                        index: "/editor",
                        title: "富文本编辑器",
                    },
                ],
            },
        ],
    },
    {
        icon: "el-icon-lx-emoji",
        index: "/icon",
        title: "自定义图标",
    },
    {
        icon: "el-icon-pie-chart",
        index: "/charts",
        title: "schart图表",
    },
    {
        icon: "el-icon-lx-global",
        index: "/i18n",
        title: "国际化功能",
    },
    {
        icon: "el-icon-lx-warn",
        index: "7",
        title: "错误处理",
        subs: [
            {
                index: "/permission",
                title: "权限测试",
            },
            {
                index: "/404",
                title: "404页面",
            },
        ],
    },
    {
        icon: "el-icon-lx-redpacket_fill",
        index: "/donate",
        title: "支持作者",
    },
];

const route = useRoute();
const onRoutes = computed(() => {
    return route.path;
});

const router = useRouter();
const handleSelect = (index, indexPath) => {
    if (index == "/map" || index == "/dashboard") {
        router.push(index);
    } else {
        layer.open({
            title: "标题", content: "内容", area: ['400px', '400px'],
            shade: false
        });
    }
}

</script>

<style scoped>
.sidebar {
    display: block;
    position: absolute;
    left: 0;
    top: 150px;
    bottom: 0;
    overflow-y: scroll;
    height: 50%;
    z-index: 10;
}
.sidebar::-webkit-scrollbar {
    width: 0;
}

.sidebar > ul {
    height: 100%;
}
</style>
